Microphone desk-stand.



A. H. WEISS. MICROPHONE DESK STAND. APPLIOATION FILED 11011.26. 190e.

Patented Spt. 21, 1909.

@Smm Kama A means of the nut UNITEDv STATESv PATENT OFFICE.

ALFRED H. WEISS, 0F CHICAGO, ILLINOIS, ASSIGNOR T0 KELLOGG SWITCHBOARDAND SUPPLY COMPANY, 0F CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

MICROPHONE DESK-STAND.

Specification of Letters Patent. Patented Sept. 21, 1909.

Application filed November 26,- 1906. Serial No. 345,059.

My invention relates to microphone deskstands of the character adaptedto hold a 'telephone set, andl by the weight of the set to control thecontacts in the circuit thereof for cutting the set into and out ofvoperative connection.

Theobject of my invention is to provide a stand which shall be sim-plein its operation, economic in its construction, and durable andefficient as an article of`commercial use: My invention further relatesto the details of construction whereby a positive movement is impartedto the switch-springs by the movement .of the supporting device, all ofwhich will be hereinafter described and claimed, and which isillustrated in the accompanying drawing forming a part of thisspecification, and in which;

Figure l is an elevation partly l1n sect-ion of my device with the parts1n the positlon upon the support; Fig. 2 is a perspective drawing of thelever-supporting mechanisn'n and Fig. 3 is a detail showing the meansforV preventing the vertical operating rod from turning. I I

In carrying out ,my invention I provide the pressed metal base a throughthe circular opening in the top of which extends the metallic tubularportion b upon which is threaded the metallic ring c in such manner thatthe rin c rests upon the upper face of the pressed ase port-ion a.

Immediately below'the base portion and encircling the threaded portionof the stem b is placed a collar d, below which comes the apparatusmounting-plate c, the whole'being held in firm positionagainst thecollar c by f which threads upon the lower end of the tube Z). Secured.to this apparatus mounting plate e are the terminalblocks, condenserand other devices, differing with theform of circuit with which the setis tobe used, and the lever supporting plate g shown in Fig. 2, whichhas mounted thereon the. contact-springs l1, and z which control thecircuit of the telephone set.

The lever supporting plate g is provided] with the downwardly extendinglugs j between which the two parallel .lever portions Z, placed a shortdistance apart, are pivoted at and have the spring-operating link mpivoted thereto at an intermediate point, this link having carried uponits lower endthe insulating roller n. y

The lever pieces Z have the pino, extended between their free ends,which is engaged by i the link p for operating the lever. This link`1`is secured at its upper end tothe supporting shaft gwhich'extends out atthe top of the .i

stand and terminates invan enlarged portion o into-a slot of which theextending portion s is secured to carry the Y portions in which the setis supported.

The partition t is secured within the-tube p to form a guide for thelower end of the vertical supporting shaft 'g and also to form a seatfor the spring u which by its pressure -upon the sleeve o keeps theshaft in its uppermost position when the telephone set is not supportedthereon. p

` In order to prevent the shaft from turning the slotted washer w isplaced aboutI the `shaft g in such manner that the flat-tened portion mshown in Fig. 3 rests against the face of the notch y, this washer beingsecured*^ l' to the top or cap-piece e by screws or in any othersuitable manner.

It will be seen that by this construction I multiply the pressure effectof the weight of the telephone Set by the ratio of the lever arms of thelever l and thereby secure a very posit-ive movement to the contactspring z' whlch may by this arrangement be made comparatively heavy andstiff.

It will be understood that I have here shown and 4described 'myinvention with relation to certain details, but that I do not wish to beunduly limited thereto, it being possible to carry out my purpose by theuse of many` variations from thesedetailswit-hout departing from thespirit ,or scope of my invention. v 4 v What I claim as new and desireto secure by Letters Patent is.:

'1. A microphone desk stand having a vertically reciprocating rod, atelephone set directly supported by said rod in combination withswitch-springs in the base of the stand, and mechanism' for imparting a.pressure upon such springs in excess of the pressure upon thereciprocating support and a link connecting 4said rod and' saidmechanism, substantially as described.

2. A microphone desk stand having a vertically reciprocatingset-'supporting rod, in combination with a link carried upon the lowerend of said rod, switch-springs mounted in the base of the Stand,and'means to impart a pressure upon such springs in excess of thepressure upon the reciprocating support, substantially as described.

3. A microphone desk stand having a vertically reciprocatingset-supporting rod, nin combination with switch-springs mounted in thebase of the stand, a pair of links, one connected with the lower end ofthe reciprocating supporting rod and the other with the switch-springs,and lever-mechanism between such links, whereby pressure is impartedupon .the springs in excess of the pressure upon the reclprocatingsupport, substantially as described. i

4. A microphone desk stand, having a vertically reciprocating.set-supporting'rod, in combmation with switch-springs in the base ofthe stand, a link' carried upon the lower end of the reciprocating rod,a pivoted lever having its free end connected with the lower end of saidlink, and a link connecting the switch-spring with an intermediate pointon and a second said lever, substantially pose set forth. v

5. A'micr'ophonedesk stand having a vertically geciprocatingset-supporting rod, in combination -with switch-springs in the base ofthe stand, a link pivoted upon the lower end of the supporting-rod, apair of leverstrips engaged by the lower end of said link, link mountedbetween said lever-strips and enga ing the switch-springs, substantiallyas. an for lthe purpose set as and for the purv forth.

6. A microphone desk stand having a verticallyreciprocating'set-supporting rod, in combination with switch-sprm'gsadapted to be actuated Aby the movement of sald supportingy rod, linkand lever mechanism con- -co1nprising a hollow base,

necting the supporting rod and the springs,

whereby pressure 1s imparted to said springs in excess of the pressureupon the reciproeating supporting rod, substantially as described. i

7. A microphone desk stand having a vertically reciprocatingset-supporting rod, switch springs in the base of the stand, a pivotedmember for transmittingjthe motion of the supporting rod to theswitch-springs, a link between said pivoted-member and the rod and'asecond link between the pivoted member and the switch springs and asupport for said pvotedmember detachably secured within the base of the.stand, substantially as described.

8. A microphone desk stand having a cylindrical set-supporting rod witha notch formed therein, in combination with a washer having a flattenedportion engaging said notch to prevent' the supporting roc from turning,and having a slot extending from the periphery flattened portion,whereby the washer may be readily assembled to its engaging position,substantially as described. y

9. The combination with a microphone telephone set, of a supportingstand therefor a tubular standard supported by the base, a setsupportinn rod extended within said tubular standard and adapted to bedepressed by the weight of the microphone set, a slotted washer withinthe hollow portion of said standard, a portion of said slot engaging aflattened portion-of said rod to prevent the rod from rotating, andswitch springs in the base adapted to be actuated by the depressionofsaid rod, substantially as described.

Signed by me at Chicago, county of Cook, and State of Illinois, in thepresence of two witnesses.

ALFRED H. VEISS. Witnesses CLIFFORD C. BnADUnY, EDITH F. GRIER.

ofthe washer to such

